mirror of https://github.com/OpenTTD/OpenTTD.git
108 lines
3.0 KiB
C++
108 lines
3.0 KiB
C++
/* $Id$ */
|
|
|
|
#ifdef ENABLE_NETWORK
|
|
|
|
#include "../stdafx.h"
|
|
#include "../debug.h"
|
|
#include "network_data.h"
|
|
#include "../string.h"
|
|
#include "network_client.h"
|
|
#include "../command.h"
|
|
#include "../callback_table.h"
|
|
#include "../helpers.hpp"
|
|
|
|
// Add a command to the local command queue
|
|
void NetworkAddCommandQueue(NetworkClientState *cs, CommandPacket *cp)
|
|
{
|
|
CommandPacket* new_cp = MallocT<CommandPacket>(1);
|
|
|
|
*new_cp = *cp;
|
|
|
|
if (cs->command_queue == NULL) {
|
|
cs->command_queue = new_cp;
|
|
} else {
|
|
CommandPacket *c = cs->command_queue;
|
|
while (c->next != NULL) c = c->next;
|
|
c->next = new_cp;
|
|
}
|
|
}
|
|
|
|
// Prepare a DoCommand to be send over the network
|
|
void NetworkSend_Command(TileIndex tile, uint32 p1, uint32 p2, uint32 cmd, CommandCallback *callback)
|
|
{
|
|
CommandPacket *c = MallocT<CommandPacket>(1);
|
|
byte temp_callback;
|
|
|
|
c->player = _local_player;
|
|
c->next = NULL;
|
|
c->tile = tile;
|
|
c->p1 = p1;
|
|
c->p2 = p2;
|
|
c->cmd = cmd;
|
|
c->callback = 0;
|
|
|
|
temp_callback = 0;
|
|
|
|
while (temp_callback < _callback_table_count && _callback_table[temp_callback] != callback)
|
|
temp_callback++;
|
|
if (temp_callback == _callback_table_count) {
|
|
DEBUG(net, 0, "Unknown callback. (Pointer: %p) No callback sent", callback);
|
|
temp_callback = 0; /* _callback_table[0] == NULL */
|
|
}
|
|
|
|
if (_network_server) {
|
|
// We are the server, so set the command to be executed next possible frame
|
|
c->frame = _frame_counter_max + 1;
|
|
} else {
|
|
c->frame = 0; // The client can't tell which frame, so just make it 0
|
|
}
|
|
|
|
ttd_strlcpy(c->text, (_cmd_text != NULL) ? _cmd_text : "", lengthof(c->text));
|
|
|
|
if (_network_server) {
|
|
// If we are the server, we queue the command in our 'special' queue.
|
|
// In theory, we could execute the command right away, but then the
|
|
// client on the server can do everything 1 tick faster than others.
|
|
// So to keep the game fair, we delay the command with 1 tick
|
|
// which gives about the same speed as most clients.
|
|
NetworkClientState *cs;
|
|
|
|
// And we queue it for delivery to the clients
|
|
FOR_ALL_CLIENTS(cs) {
|
|
if (cs->status > STATUS_AUTH) NetworkAddCommandQueue(cs, c);
|
|
}
|
|
|
|
// Only the server gets the callback, because clients should not get them
|
|
c->callback = temp_callback;
|
|
if (_local_command_queue == NULL) {
|
|
_local_command_queue = c;
|
|
} else {
|
|
// Find last packet
|
|
CommandPacket *cp = _local_command_queue;
|
|
while (cp->next != NULL) cp = cp->next;
|
|
cp->next = c;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// Clients send their command to the server and forget all about the packet
|
|
c->callback = temp_callback;
|
|
SEND_COMMAND(PACKET_CLIENT_COMMAND)(c);
|
|
}
|
|
|
|
// Execute a DoCommand we received from the network
|
|
void NetworkExecuteCommand(CommandPacket *cp)
|
|
{
|
|
_current_player = cp->player;
|
|
_cmd_text = cp->text;
|
|
/* cp->callback is unsigned. so we don't need to do lower bounds checking. */
|
|
if (cp->callback > _callback_table_count) {
|
|
DEBUG(net, 0, "Received out-of-bounds callback (%d)", cp->callback);
|
|
cp->callback = 0;
|
|
}
|
|
DoCommandP(cp->tile, cp->p1, cp->p2, _callback_table[cp->callback], cp->cmd | CMD_NETWORK_COMMAND);
|
|
}
|
|
|
|
#endif /* ENABLE_NETWORK */
|